Chapter 9 Ethernet Specification and Operation
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9.7.17 HC Register (Class ID: 357 Hex)
Service Code
Service Code Service Name
Support
Description
Class Attribute
Instance
Attribute
H’0E Get_Attribute_Single X V Read one attribute
H’10 Set_Attribute_Single X V Write one attribute
H’32 Read_Parameter X V Read Parameter
H’33 Write_Parameter X V Write Parameter
Class
Class ID:H’357
Instance
H’01:Instance Attribute, Bit Register
H’02:Instance Attribute, Word Register
When Instance = 1, the Instance Attributes are listed below.
Instance
Attribute
Name
Access
Rule
Data
Type
Values Description
H’00 HC0 Set BOOL H’00 HC0 bit register
H’01 HC1 Set BOOL H’00 HC1 bit register
H’02-H’FE HC2-HC254 Set BOOL H’00 HC2-HC254 bit register
H’FF HC255 Set BOOL H’00 HC255 bit register
When Instance = 2, the Instance Attributes are listed below.
Instance
Attribute
Name
Access
Rule
Data
Type
Values Description
H’00 HC0 Set DINT H’00 HC0 word register
H’01 HC1 Set DINT H’00 HC1 word register
H’02-H’FE HC2-HC254 Set DINT H’00 HC2-HC254 word register
H’FF HC255 Set DINT H’00 HC255 word register